I use four 3500# working, 10,000 capacity rachet straps from Northern http://www.northerntool.com/webapp/w...70_21895_21895 with the hooks and clasps on four D-rings in the floor. The front ones attach to the "radius rods" in each corner and the rears to the lower shock mounts. Never had anything get loose and the car is in the perfect spot everytime no matter where it is.